Home / 31,023.22-42,837.90-28,771.98

Finding the Fourth Proportional to 31,023.22, 42,837.90 and 28,771.98

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Solution

The fourth proportional to 31,023.22, 42,837.90 and 28,771.98 is: 39,729.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,023.22 : 42,837.90 = 28,771.98 : x
  2. Step 2: Convert to fraction form
    31,023.22/42,837.90 = 28,771.98/x
  3. Step 3: Cross multiply
    31,023.22x = 42,837.90 × 28,771.98
  4. Step 4: Simplify right side
    31,023.22x = 1,232,531,202.04
  5. Step 5: Solve for x
    x = 1,232,531,202.04/31,023.22
  6. Step 6: Final answer
    x = 39,729.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.